baltimore city and county each have three. pg county has the most in the state so far with six. west nile virus can go undetected in many people. if you have symptoms, they can mimic the flu. >> some headache, fever, muscle ache, oth earl body aches as well as a rash or swollen lymph nodes. >> reporter: the department of agriculture and the city are working to combat the spread of west nile. they will start spraying in east port and outside the city. how to handle the problem is where the disagreement s bob is all for zapping them with the chemical praying. >> this is the third day. i've put on repellent each day and still i get mosquito bites on the leg oar loor dave is the manager -- >> reporter: dave is the manager and he is outside all the time. he doesn't object to the spraying. gee just wants people in the community to know when it will happen. >> there are individuals who do have sensitivies to it and it can be serious consequences for those individuals. >> reporter: the city will spray monday in east porter rase, knights bridge, primrose acres and truckers heights. the d